WPF制作歌词动画

 Storyboard DownLrcStory = new Storyboard();
                       
                        DoubleAnimation up = new DoubleAnimation(0, 30, new Duration(TimeSpan.FromSeconds(time)));
                        DoubleAnimation next = new DoubleAnimation(30, 0, new Duration(TimeSpan.FromSeconds(nextTime)));
                        up.RepeatBehavior = RepeatBehavior.Forever;
                        DownLrcStory.Children.Add(up);
                        DownLrcStory.Children.Add(next);
                        Storyboard.SetTarget(up, lrcDown);
                        Storyboard.SetTarget(next, lrcNext);
                        Storyboard.SetTargetProperty(up, new PropertyPath("Effect.Radius"));
                        Storyboard.SetTargetProperty(next, new PropertyPath("Effect.Radius"));
                        DownLrcStory.Begin();